Genuinely curious, and this is a question posed to anyone, I'm not singling you out: what is the attraction of using an app? In addition to a couple of unremovable/occasionally useful apps my phone came with like generic email, SMS and so on, I literally have: a banking app; Google Mail; and Google Maps installed. Everything else is a website saved to my homescreen, because everything wants to bombard me with notifications or otherwise waste my battery life with background services that don't need to be running. In general, why would someone want an app for a performant and responsive website?

Sublevel app on iOS and OS X is faster because it doesn’t need a full browser, just WebKit to render the pages. For example, I develop it in the browser, but I post from the app. It’s about convenience, I guess.